Matthew Poole and continuators on Luke 1:6

6 And they were both righteous before God, walking in all the commandments and ordinances of the Lord, blameless.

That they were not Righteous by a perfect Legal Righteousness, being not guilty of any Sin is certain, for so there is none Righteous, no not one, but so Righteous, as that God accepted them, and looked upon them as Righteous, as Abraham believed, and it was imputed to him for Righteousness, tho he Sinned in the denyal of his Wife, &c. or as it is said of David, 1 Kings 15.5. He did that which was Right in the Eyes of the Lord, and turned not aside from any thing which he commanded him all the Days of his Life, save only in the matter of Vriah. They also Walked in all the Commandments and Ordinances of the Lord, Blameless. A Man's Blameless Conversation before the World, is a piece of his righteousness, but will not make up alone such a Righteousness, as will testify his Acceptation with God, or Righteousness before him; he must in the first place, Walk in the Commandments, and in the Ordinances of God. There is a Duty towards God, as well as toward Men: and that Duty lies in the keeping his Commandments, his Ordinances for the fear of the Lord, must not be taught us by the Precepts of Men. Yea, and in all the Ordinances of God having a respect to all Gods Commandments, and making this his constant Course and Practice not doing it by fits, he must also be blamless towards Men. Here is a true Pattern of what a Married Couple should be, especially where the Husband waits at the Altar, and is imployed in the holy things of God. A Bishop must be blameless, 1 Tim. 3.2. v. 8. A Deacon Grave, not double Tongued, not given to much Wine, not greedy of filthy Lucre—v. 10. Blameless; and v. 11. Even so must their Wives be Grave, not Slanderers, Sober, &c. such were Zacharias and Elizabeth. Such ought all Ministers of the Gospel, and their Wives to be.